321 	wb->congested = wb_congested_get_create(bdi, blkcg_id, gfp);  in wb_init()
322 	if (!wb->congested) {  in wb_init()
344 	wb_congested_put(wb->congested);  in wb_init()
387 	wb_congested_put(wb->congested);  in wb_exit()
417 	struct bdi_writeback_congested *new_congested = NULL, *congested;  in wb_congested_get_create()  local
428 		congested = rb_entry(parent, struct bdi_writeback_congested,  in wb_congested_get_create()
430 		if (congested->blkcg_id < blkcg_id)  in wb_congested_get_create()
432 		else if (congested->blkcg_id > blkcg_id)  in wb_congested_get_create()
440 		congested = new_congested;  in wb_congested_get_create()
441 		rb_link_node(&congested->rb_node, parent, node);  in wb_congested_get_create()
442 		rb_insert_color(&congested->rb_node, &bdi->cgwb_congested_tree);  in wb_congested_get_create()
444 		return congested;  in wb_congested_get_create()
460 	refcount_inc(&congested->refcnt);  in wb_congested_get_create()
463 	return congested;  in wb_congested_get_create()
472 void wb_congested_put(struct bdi_writeback_congested *congested)  in wb_congested_put()  argument
476 	if (!refcount_dec_and_lock_irqsave(&congested->refcnt, &cgwb_lock, &flags))  in wb_congested_put()
480 	if (congested->__bdi) {  in wb_congested_put()
481 		rb_erase(&congested->rb_node,  in wb_congested_put()
482 			 &congested->__bdi->cgwb_congested_tree);  in wb_congested_put()
483 		congested->__bdi = NULL;  in wb_congested_put()
487 	kfree(congested);  in wb_congested_put()
768 		struct bdi_writeback_congested *congested =  in cgwb_bdi_exit()  local
772 		congested->__bdi = NULL;	/* mark @congested unlinked */  in cgwb_bdi_exit()
983 void clear_wb_congested(struct bdi_writeback_congested *congested, int sync)  in clear_wb_congested()  argument
989 	if (test_and_clear_bit(bit, &congested->state))  in clear_wb_congested()
997 void set_wb_congested(struct bdi_writeback_congested *congested, int sync)  in set_wb_congested()  argument
1002 	if (!test_and_set_bit(bit, &congested->state))  in set_wb_congested()